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公开(公告)号：DK636087D0
公开(公告)日：1987-12-03
申请号：DK636087
申请日：1987-12-03
Applicant: IBM
Inventor： LISLE RONALD JAY , MOSS EUAL AARON , RYDER JOHN HOYT
Abstract: A text compression method and apparatus are disclosed that enable overall compression ratios of more than six or eight to one for normal language text. Plural multiple-word dictionaries that are specialized for the particular field of use are employed together with a header transmission format that identifies which dictionaries are to be used. In addition, entries in these dictionaries are categorized by a weighted frequency of use ranking in which the product of the word length in characters and the frequency of occurrence of that word in the text is taken as the weighted figure of merit for ranking words to be placed in the individual dictionaries.
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公开(公告)号：DE69327639D1
公开(公告)日：2000-02-24
申请号：DE69327639
申请日：1993-11-18
Applicant: IBM
Inventor： LISLE RONALD JAY
Abstract: A system and method are provided for improving quality of sound generated by computerized systems having limited memory. A wavetable synthesizer is implemented wherein data utilized to synthetically generate acoustic waveforms is stored. A plurality of datasets is also generated and stored, each comprised of a digitized acoustic waveform. In response to a MIDI datastream, the system determines if an appropriate stored acoustic sample corresponding thereto resides in the system's memory. If so, the system will generate the desired sound utilizing the stored acoustic sample data. If not, the system automatically determines in real time the appropriate wavetable dataset which will generate a sound most closely approximating the acoustic sound. The system thus dynamically reconfigures in real time between wavetable and acoustic sample synthesis, being configured for the former when appropriate acoustic samples are not present.
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公开(公告)号：ZA918427B
公开(公告)日：1992-08-26
申请号：ZA918427
申请日：1991-10-22
Applicant: IBM
Inventor： LISLE RONALD JAY , RONALD JAY LISLE
IPC: G06F3/05 , G06F5/16 , G06F9/38 , G06F9/445 , G06F15/16 , G06F15/177 , G10H7/00 , G06F , G06G , G06K , G10H
Abstract: A system is provided including a host processor 22 and an audio capture and playback adapter 24 having a DSP co-processor 26. The adapter includes shared memory 28 accessible from both the DSP and the host. A DSP program is periodically written to the shared memory by the host and executed by the DSP. A non ping-pong dual buffer technique is disclosed wherein alternately one buffer is executed by the DSP while the remaining buffer is updated or linked by the host. In one embodiment, two pointer variables are used, each indicating respectively which buffer is currently being executed by the DSP and which has been updated by the host. Initially both pointer and pointer B point to buffer A containing the initial DSP code. Each time the DSP requires execution of the configurable program, it reads pointer B, copies it to pointer A, and then branches to the buffer pointer A points to. When the host begins to relink to a buffer, it first sets pointer B equal to pointer A, relinks into the opposite buffer as pointer A, and then sets pointer B to this opposite buffer. The host is thereby prevented from updating a buffer currently being executed by the DSP. Real time dynamic linking of code segments in a tightly coupled co-processing system is thereby provided.
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公开(公告)号：BR8901485A
公开(公告)日：1989-11-14
申请号：BR8901485
申请日：1989-03-30
Applicant: IBM
Abstract: An extended selection field for use in selecting one or more choices from a list on an information system display. The extended selection field exhibits the behavior and appearance of a standard single choice field, with the additional capability to switch into a multiple choice mode to override the single choice restriction. A single choice is selected using the standard technique of moving the selection bar to the desired choice and pressing the Enter key. However, the single choice restriction may be overridden by using the standard multiple choice selection technique of moving the selection bar to a first desired choice and pressing (instead of the Enter key) a choice selection key such as the space bar. The field then exhibits the behavior and appearance of a standard multiple choice field. The single choice selection bar immediately changes to a multiple choice indicator and the operator receives immediate visual feedback that the system is enabled to accept multiple choices. At the conclusion of the multiple choices, the Enter key is depressed to submit all of the selected choices for processing. The single choice mode can be reestablished by deselecting all of the selected choices.
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Patent Agency Ranking
公开(公告)号：DK636087A
公开(公告)日：1988-06-05
申请号：DK636087
申请日：1987-12-03
Applicant: IBM
Inventor： LISLE RONALD JAY , MOSS EUAL AARON , RYDER JOHN HOYT
Abstract: A text compression method and apparatus are disclosed that enable overall compression ratios of more than six or eight to one for normal language text. Plural multiple-word dictionaries that are specialized for the particular field of use are employed together with a header transmission format that identifies which dictionaries are to be used. In addition, entries in these dictionaries are categorized by a weighted frequency of use ranking in which the product of the word length in characters and the frequency of occurrence of that word in the text is taken as the weighted figure of merit for ranking words to be placed in the individual dictionaries.
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17.发明专利
公开(公告)号：SG46972A1
公开(公告)日：1998-03-20
申请号：SG1996000356
申请日：1991-10-23
Applicant: IBM
Inventor： LISLE RONALD JAY , MCDONALD SCOTT B , WILKES MICHAEL D
Abstract: A method and apparatus are disclosed for simultaneously outputting digital audio and MIDI synthesised music utilising a single digital signal processor. The Musical Instrumert Digital Interface (MIDI) permits music to be recorded and/or synthesised utilising a data file containing multiple serially listed program status messages and matching note on and note off messages. In contrast, digital audio is generally merely compressed, utilising a suitable data compression technique, and recorded. The audio content of such a digital recording may then be restored by decompressing the recorded data and converting that data utilising a digital-to-analog convertor. The method and apparatus of the present invention selectively and alternatively couples portions of a compressed digital audio file and a MIDI file to a single digital signal processor which alternately decompresses the digital audio file and implements a MIDI synthesiser. Decompressed audio and MIDI synthesised music are then alternately coupled to two separate buffers. The contents of these buffers are then additively mixed and coupled through a digital-to-analog convertor to an audio output device to create an output having concurrent digital audio and MIDI synthesised music.
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公开(公告)号：DE3751421D1
公开(公告)日：1995-08-24
申请号：DE3751421
申请日：1987-10-02
Applicant: IBM
Inventor： LISLE RONALD JAY , MOSS EUAL AARON , RYDER JOHN HOYT
Abstract: A text compression method and apparatus are disclosed that enable overall compression ratios of more than six or eight to one for normal language text. Plural multiple-word dictionaries that are specialized for the particular field of use are employed together with a header transmission format that identifies which dictionaries are to be used. In addition, entries in these dictionaries are categorized by a weighted frequency of use ranking in which the product of the word length in characters and the frequency of occurrence of that word in the text is taken as the weighted figure of merit for ranking words to be placed in the individual dictionaries.
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公开(公告)号：AU596713B2
公开(公告)日：1990-05-10
申请号：AU8163787
申请日：1987-11-24
Applicant: IBM
Inventor： LISLE RONALD JAY , MOSS EUAL AARON , RYDER JOHN HOYT
Abstract: A text compression method and apparatus are disclosed that enable overall compression ratios of more than six or eight to one for normal language text. Plural multiple-word dictionaries that are specialized for the particular field of use are employed together with a header transmission format that identifies which dictionaries are to be used. In addition, entries in these dictionaries are categorized by a weighted frequency of use ranking in which the product of the word length in characters and the frequency of occurrence of that word in the text is taken as the weighted figure of merit for ranking words to be placed in the individual dictionaries.
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公开(公告)号：AU8163787A
公开(公告)日：1988-06-09
申请号：AU8163787
申请日：1987-11-24
Applicant: IBM
Inventor： LISLE RONALD JAY , MOSS EUAL AARON , RYDER JOHN HOYT
Abstract: A text compression method and apparatus are disclosed that enable overall compression ratios of more than six or eight to one for normal language text. Plural multiple-word dictionaries that are specialized for the particular field of use are employed together with a header transmission format that identifies which dictionaries are to be used. In addition, entries in these dictionaries are categorized by a weighted frequency of use ranking in which the product of the word length in characters and the frequency of occurrence of that word in the text is taken as the weighted figure of merit for ranking words to be placed in the individual dictionaries.
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